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Plate Tectonics
Test Description: This covers an introduction to plate tectonics.
Instructions: Answer all questions to get your test result.
1) Wegener's hypothesis of continental drift stated that...
A
Earth is slowly cooling and shrinking.
B
the continents do not move.
C
the continents were once joined together in a supercontinent.
D
Earth's surface is made up of seven continents.
2) What is Pangaea?
A
The name of a German scientist
B
Another name for continental drift
C
The name of a supercontinent that existed millions of years ago
D
The name of an ancient fossil
3) What is any trace of an organism preserved in rock?
A
landmass
B
fossil
C
continent
D
landform
4) What technology was used by geologists in the mid-1900s to map the ocean floor?
A
satellites
B
sonar
C
deep-sea diving
D
submarines
5) Where does molten material rise and erupt in sea-floor spreading?
A
Along mid-ocean ridges
B
In deep-ocean trenches
C
Along the edges of continents
D
At the north and south poles
6) Why is old oceanic crust more dense than new oceanic crust?
A
It is hotter
B
It is moving toward a deep-ocean trench
C
It is closer to a mid-ocean ridge.
D
It is cooler
7) What do geologists think causes the movement of Earth's plates?
A
Earth's magnetic field
B
earthquakes
C
conduction
D
convection currents in the mantle
8) What is the geological theory that Earth's lithosphere is broken into sections called plates which are in slow, constant motion driven by convection currents in the mantle?
A
subduction
B
plate tectonics
C
deep-ocean trenches
D
sea-floor spreading
9) Where do two plates slide past each other in opposite directions?
A
divergent boundary
B
transform boundary
C
rift valley
D
convergent boundary
10) What feature can develop when two pieces of continental crust converge?
A
rift valley
B
deep-ocean trench
C
mountain range
D
mid-ocean ridge
11) What was the name of Alfred Wegener's hypothesis that the Earth's continents slowly move?
A
continental displacement
B
continental drift
C
continental movement
D
oceanic drift
12) What process continually adds new crust to the ocean floor on either side of a mid-ocean ridge?
A
sea-floor spreading
B
subduction
C
volcanic eruptions
D
earthquakes
13) Where does subduction occur?
A
Mid-ocean ridges
B
Mountain ranges
C
Near the center of an ocean
D
Deep-ocean trenches
14) What are the sections of Earth's lithosphere called?
A
Lithospheric sections
B
Continental drift
C
Plates
D
Lithospheric pieces
15) A divergent boundary on land results in a...
A
mid-ocean ridge
B
mountain range
C
rift valley
D
deep-ocean trench
16) When subduction occurs more rapidly than sea-floor spreading in an ocean, what happens to the ocean?
A
It heats up.
B
It shrinks.
C
It cools down.
D
It expands.
17) The newest oceanic crust is found...
A
far from mid-ocean ridges.
B
near deep-ocean trenches.
C
close to mid-ocean ridges.
D
near mountain ranges.
18) What forms the longest mountain chains on Earth?
A
The Himalayas
B
mid-ocean ridges
C
The Rockies
D
The Andes
19) What kind of boundary is characterized by plates slipping past each other in opposite directions?
A
Rift valley
B
Divergent boundary
C
Transform boundary
D
Convergent boundary
20) What process involves oceanic crust bending downward and being recycled into the mantle?
A
Subduction
B
Sea-floor spreading
C
Earthquakes
D
Volcanic eruptions
*select an answer for all questions
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